_form_h = 177;

    function showForm(_form_id, _link_id) {
        
        div = document.getElementById(_form_id);
        link = document.getElementById(_link_id);
        
        for (var i in c2aforms) {
            if (_form_id != c2aforms[i]) { 
                document.getElementById(c2aforms[i]).className = 'call2actionform hidden';
            }
        }
        
        for (var i in c2alinks) {
            if (_link_id != c2alinks[i]) { 
                document.getElementById(c2alinks[i]).className = '';
            }
        }
        
        if (div.className == 'call2actionform hidden'){
            div.className = 'call2actionform';
            link.className = 'active';
            
            document.getElementById('specificationcon').style.height = (document.getElementById('specificationcon').offsetHeight + _form_h) + "px";
        }
        else{
            div.className = 'call2actionform hidden';
            link.className = '';
            
            document.getElementById('specificationcon').style.height = (document.getElementById('specificationcon').offsetHeight - _form_h) + "px";
        }
        
        link.blur();
        
        
    }